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Growth and Nutrition of Bacteria

Growth and Nutrition of Bacteria
The organism which grows best above 45°C are called

any of these
psychrophilic
thermophilic
mesosphilic

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Growth and Nutrition of Bacteria
What are the extrinsic factors for the microbial growth?

storage temperature
all of these
humidity
composition of gas phase

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Growth and Nutrition of Bacteria
The generation time of a culture that produces two generations per hour is

equal to that produces three generations per hour
lesser than that produces three generations per hour
None of these
greater than that produces three generations per hour

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Growth and Nutrition of Bacteria
A spore differs from an actively replicating bacterium in that the spore

is able to withstand more extreme conditions than the replicating cell
is produced during a process involving asymmetric division
is metabolically inactive
All of these

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Growth and Nutrition of Bacteria
Exponential phase of growth curve of bacteria is of limited duration because of

rise in cell density
all of these
accumulation of toxic metabolites
exhaustion of nutrients

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Growth and Nutrition of Bacteria
All organisms require at least small amounts of carbondioxide, However, some can use CO2 as their sole source of carbon. Such organisms are termed as

photo-organotrophs
phototrophs
chemotrophs
autotrophs

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